Showing posts with label gimp. Show all posts
Showing posts with label gimp. Show all posts


Hey lil feller. I'm just going to pick you up with this stick and you can hang on, take you back to the garden. I didn't mean to wake you up from your hibernation or whatever.


Point Cloud Alignment

I took about 1/5th of the png images generated from the Velodyne point cloud data and manually aligned them in Gimp. It's easy to shift-select a bunch of images and open them as individual layers in Gimp, but there are no multiple layer selection capabilities: it's not possible for instance select all the layers and change their transparency.

In all of the images there are a few features, mostly beyond the edges of the road, that can be aligned with the earlier and later images. The closer together the images are in time the easier this is, but I was skipping every 4 images to take the 5th in order to speed up the process- also a gimp image with 300 layers is difficult to handle.

The later portions of the data are all purely translational, only at the very beginning are rotations and translations needed.

I think an automatic process for alignment won't be that hard, but the inherent inconsistency in frame to frame image will make for a lot of error. Translations correspond to phase shifts in the frequency domain, and I think rotations are almost as simple- and there isn't any scaling to account for.


The Kingdom


Europe Has A Mission

There was an add for this movie in The Stranger. My first thought, naturally, was WTF? Then I wondered if it was 'Command & Conquer: Generals: The Movie', and then I looked it up on IMDB (it wasn't there) and then on google and found out why: it doesn't exist. It's a joke/commentary/guerilla-art/etc.